body,ul{
    margin: 0;
    padding: 0;
}
.navbar{
    width: 100%;
    height: 50px;
    background: rgba(100, 200, 150, 0.3)
}
.container{
    margin: 0 auto;
    width: 1000px;
}
.navbar-header{
    font-weight: bold;
    color:gray;
    float: left;
    height: 50px;
    line-height: 50px;
    margin-right: 15px;
}
.navbar-nav{
    float: left;
}
li{
    list-style: none;
    float: left;
}
li a{
    text-decoration: none;
    line-height: 50px;
    height: 50px;
    padding: 15px;
    color:gray;
}
.num{
    float: right;
    height: 50px;
    line-height: 50px;
    
}

.num a{
    color: gray;
    text-decoration: none;
}
.doc-head{
    width: 100%;
    height: 570px;
    text-align: center;
    background-color: #563d7c;
    color:white;
    text-align: center;

}
.doc-head span{
    font-size: 108px;
    border: 1px solid #fff;
    width: 144px;
    height: 144px;
    display: inline-block;
    -webkit-border-radius:10px;
    -moz-border-radius:10px;
    border-radius: 10px;
    margin-top: 80px;

}
.doc-head .title{
    width: 720px;
    font-size: 24px;
    margin: 0 auto;
     margin-top: 30px;
    margin-bottom: 30px;
}
.doc-head a{
    font-size: 20px;
    color: #fff;
    border: 1px solid #fff;
    border-radius: 5px;
    padding: 15px 30px;
    text-decoration: none;
    margin-top: 30px;
    margin-bottom: 30px;
}
.doc-head .version{
    margin: 30px 0;
    font-size: 18px;
    color: #9783b9
}
